Monosaccharides are to ______ as _______ are to proteins.
A) proteins; nucleotides
B) lipids; carbohydrates
C) glucose molecules; lipids
D) carbohydrates; amino acids
E) amino acids; nucleic acids
D) carbohydrates; amino acids
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Where would a ligand-gated ion channel typically be found on a neuron?
A) Presynaptic membrane B) Axon hillock C) Postsynaptic membrane D) Ligand-gated ion channels are not found on neurons. E) Axon
Hemophilia is a sex-linked recessive condition that results in deficient blood clotting. The disease causes excessive bleeding which occurs spontaneously or upon slight injury. In dogs (as in humans) hemophilia is caused by a defect in a gene on the X chromosome. What will be the results of mating between a normal, non-carrier female dog and a male dog with hemophilia?
A. All female offspring will be normal and half the male offspring will have hemophilia. B. Half the male offspring will be normal and half will have hemophilia; all females will be carriers. C. All the female offspring will be normal and all male offspring will be carriers. D. Half the female offspring will have hemophilia and half will be carriers, all male offspring will be normal. E. All of the offspring will be normal, but all females will be carriers.
All of the following are characteristics of IgM except
A. it contains a central J chain. B. it has 10 antigen binding sites. C. it is the first class synthesized by a plasma cell. D. it is a dimer. E. it can serve as a B-cell receptor.
Which of the following can explain the diversity of beak shapes in the finches Darwin observed in the Galapagos islands?
a. Different finch species settled on each island separately. b. The finches likely descended from a common South American ancestor. c. The finches purposefully evolved to better suit their environment, specifically their food supplies. d. Finches migrated to the islands to which they would be better suited.